:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #16161f;
  --fg: #e8e8ed;
  --fg-dim: #8888a0;
  --fg-muted: #55556a;
  --accent: #00e5a0;
  --accent-dim: rgba(0, 229, 160, 0.12);
  --warn: #ffb340;
  --red: #ff4d6a;
  --border: #1e1e2a;
  --radius: 12px;
  --font: 'Space Grotesk', system-ui, sans-serif;
  --mono: 'DM Mono', 'SF Mono', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* --- Hero --- */
.hero {
  padding: 80px 40px 60px;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 24px;
  font-weight: 500;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero h1 .accent {
  color: var(--accent);
}

.lede {
  font-size: 1.05rem;
  color: var(--fg-dim);
  line-height: 1.7;
  max-width: 520px;
}

/* --- Terminal --- */
.terminal {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot.red { background: var(--red); }
.dot.yellow { background: var(--warn); }
.dot.green { background: var(--accent); }

.terminal-title {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-muted);
  margin-left: 8px;
}

.terminal-body {
  padding: 20px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 2;
}

.terminal-line { white-space: nowrap; overflow: hidden; }
.mono-dim { color: var(--fg-muted); }
.mono-accent { color: var(--accent); }
.mono-warn { color: var(--warn); }
.mono-green { color: #4dff91; }

.blink {
  animation: blink-cursor 1s infinite;
  color: var(--accent);
}

@keyframes blink-cursor {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* --- Signal Section --- */
.signal {
  padding: 80px 40px;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.signal-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--warn);
  margin-bottom: 20px;
  font-weight: 500;
}

.signal h2 {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.signal-text {
  font-size: 1.05rem;
  color: var(--fg-dim);
  line-height: 1.8;
  max-width: 640px;
  margin: 0 auto;
}

/* --- Features --- */
.features {
  padding: 60px 40px 80px;
  max-width: 1200px;
  margin: 0 auto;
}

.features-header {
  text-align: center;
  margin-bottom: 60px;
}

.features-header h2 {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: border-color 0.2s;
}

.feature-card:hover {
  border-color: var(--accent);
}

.feature-number {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 16px;
  font-weight: 500;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
  line-height: 1.3;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--fg-dim);
  line-height: 1.7;
}

/* --- Numbers --- */
.numbers {
  padding: 80px 40px;
  max-width: 1000px;
  margin: 0 auto;
}

.numbers-container {
  text-align: center;
}

.numbers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 40px;
}

.number-block {
  padding: 28px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.number-value {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
  letter-spacing: -1px;
}

.number-label {
  font-size: 0.85rem;
  color: var(--fg-dim);
  line-height: 1.5;
}

/* --- Closing --- */
.closing {
  padding: 80px 40px;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.closing h2 {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.closing-text {
  font-size: 1.05rem;
  color: var(--fg-dim);
  line-height: 1.8;
  max-width: 600px;
  margin: 0 auto 40px;
}

.closing-tiers {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.tier {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 20px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-width: 140px;
}

.tier-name {
  font-size: 0.85rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-family: var(--mono);
}

.tier-price {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--fg);
}

/* --- Footer --- */
.site-footer {
  padding: 60px 40px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-brand {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 6px;
  letter-spacing: -0.3px;
}

.footer-tagline {
  font-size: 0.88rem;
  color: var(--fg-muted);
  margin-bottom: 16px;
}

.footer-links a {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.88rem;
  font-family: var(--mono);
}

.footer-links a:hover {
  text-decoration: underline;
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero h1 { font-size: 2.2rem; }
  .features-grid { grid-template-columns: 1fr; }
  .numbers-grid { grid-template-columns: repeat(2, 1fr); }
  .closing-tiers { flex-direction: column; align-items: center; }
}

@media (max-width: 600px) {
  .hero { padding: 50px 20px 40px; }
  .hero h1 { font-size: 1.8rem; }
  .signal, .features, .numbers, .closing { padding: 50px 20px; }
  .signal h2, .features-header h2, .closing h2 { font-size: 1.5rem; }
  .numbers-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .number-value { font-size: 1.8rem; }
  .terminal-body { font-size: 11px; overflow-x: auto; }
}

/* --- Site Nav (landing page top bar) --- */
.site-nav {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-nav-logo {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 1px;
}

.site-nav-calc-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--warn);
  background: rgba(255, 179, 64, 0.08);
  border: 1px solid rgba(255, 179, 64, 0.25);
  padding: 7px 16px;
  border-radius: 100px;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s;
}

.site-nav-calc-link:hover {
  background: rgba(255, 179, 64, 0.14);
  border-color: rgba(255, 179, 64, 0.4);
}

/* --- Hero calculator CTA --- */
.hero-calc-cta {
  display: inline-block;
  margin-top: 24px;
  font-size: 13px;
  color: var(--accent);
  font-family: var(--mono);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 160, 0.35);
  padding-bottom: 2px;
  transition: border-color 0.15s, color 0.15s;
}

.hero-calc-cta:hover {
  border-color: var(--accent);
  color: #fff;
}

/* --- Footer calculator link --- */
.footer-calc-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--warn);
  font-family: var(--mono);
  text-decoration: none;
}

.footer-calc-link:hover { text-decoration: underline; }

@media (max-width: 600px) {
  .site-nav-inner { padding: 14px 20px; }
}